Graphics issues are known for the entire driver. Per guidelines long established since this driver is clearly labeled as having imperfectly emulated graphics, this is a redundant and therefore invalid bug as far as MAMETESTERS is concerned. Unless there is heavy regression (complete loss of display) or something similarly catastrophic, such reports on flagged machines are not accepted.

Please review Help pulldown at the top right of screen for "Rules and Guidelines" for reporting conditions and what is or isn't considered a valid report.
Closing.